I have set a rule to delay all outgoing emails by 1 minute but have set an exception that if it is assigned to any Category, it should be sent out immediately. When I do not assign a Category, the mails are going out after the 1-minute delay. But when I assign it a Category, instead of being sent immediately, it gets stuck in Outbox! And if I edit it after that and remove the Category assignment, it doesn't help and is still stuck. I have tried deleting the rule and recreating it but it still doesn't work.